Answer :

#include<stdio.h>  //header file contains the function,decleraction and macro defination of key words used in code.

int main ()

{

int num,result=0,num1,num2;  //adressing the variables

printf("Enter the digits "); //output

scanf("%d",&num);

num2=num;

while (num!=0)

{

num1=num%10;  // it will store the last number

result=result+num1*num1*num1; //it will add it 

num=num/10;  // it will remove the last digit

}

if (result==num2)

{ 

printf("%d is a Armstrong number",num2);  //output

}

else

{

printf("%d is not a Armstrong number",num2);  //output

}

}

Output :